Method of making nails



UNITED A vSTATES PATENT OFFICE A681,199 (abandoned). cation April 6,1935, Serial No. 15,127.

Divided and this appli- France September 3, 1932 3 Claims.

The present application, which is a. division of my U, S. patentapplication Ser. No. 681,199, of July 19, 1933, concerns the manufactureof nails including a cylindrical part carrying the head and a ribbed-part carrying thel point, said ribbed part being of a widthsubstantially greater than the diameter of the cylindrical part.

According to my invention, I form a bar along which cylindrical partsand cross-shaped, or more generally star-shaped, parts alternate, saidparts being of suitable lengths. Each cylindrical part, after havingbeen cut at a suitable distance from the cross-shaped part adjacentthereto, is upset so as to form the head. The point of the precedingnail is itself obtained by stampingvof the remainder of the samecylindrical part, or otherwise by cutting of the end of the cross shapedpart above mentioned.

Preferred embodiments of the present invention will be hereinafterdescribed, with reference to the accompanying drawings given merely byway of example, and in which:

Fig. 1 shows a cylindrical bar;

Fig. 2 shows the same bar after it has been treated so as to form alongit porticns of crossshaped section;

Fig. 3 is a sectional View on the line 3-3 of Fig. 2;

Fig. 4 is a perspective View of one of the elements into which the baris cut, according to a first embodiment;

Fig. 5 shows the nail obtained from the element of Fig. 4`;

Fig. 6 is a perspective view of one of the elements into which the baris cut according to another embodiment;

Fig. '7 shows the nail obtained from the ele-` ment of Fig. 6.

According to the present invention, a cylindrical 'bar as shown in Fig.1 is deformed at certain places so as to form parts b of cross-shapedsection (Figs. 2 and 3) separated from one another by unalteredcylindricall parts a.

The bar thus obtained, as shown in Fig. 2, is

'then cut into a plurality of elements each of 4 treated by stamping soas to form point d.

According to another embodiment, each element (Fig. 6) is cut at the endof the crossshaped part, as at b1 and said end is then cut so as to forma point such as shown at e in Fig. 7.

It is pointed out that, according to the present invention., the Widthof the ribbed, or cross- 5 shaped parts b of thebar is substantiallygreater than the diameter of the cylindrical parts a, of said rod, thecross sectional area in part b being substantially the same as in parta.In other words, the deformation of parts b is made in 10 such manner asto modify the shape of the cross section of the bar Withoutsubstantially varying the area of said cross section. 4

While I have, in theabove description, disclosed what I deem to bepractical embodiments i5 of the invention, it should be Well understoodthat I do not Wish to be limited thereto as there might be changes madeWithout departing from the principle of the invention as comprehendedwithin the scope of the appended claims.

What I claim is:

l. The method of making nails which comprises, taking a cylindrical barof metal, deforming certain parts of the bar, all of the -same lengthand separated from one another by unaltered cylindrical parts also allof the same length, so as to give. them a star shaped section of a widthsubstantially greater than the diameter of the bar, cutting said barinto elements each of which includes at least a portion of a 30cylindrical part and at least av portion of the adjacent star-shapedpart, upsetting the end of the cylindrical part of each element so as toform the head of the nail, and treating the opposite end of said elementso as to form the point of the nail.

2. The method of making nails which comprises taking a cylindrical barof metal, deforming certain parts-of said bar, all of the same lengthand separated from one another by unaltered cylindrical parts also allof the same length, so as to give them a cross-shaped section of a widthsubstantially greater than the diameter of the bar, cutting said barinto elements each of which includes a portion of a cylindrical part,the whole of the adjacent cross-shaped par-t, and a portion of the nextcylindrical part, upsetting the end of the iirst mentiened cylindricalportion of each 'element so as to form the head of the nail, andtreating the opposite cylindrical portion of said element by stamping soas to form the point of the nail.

3. The method of making nails which comprises taking a cylindrical barof metal, deforming certain parts of the bar, all of the same length andseparated from one another by unaltered cylindricalparts also all of thesame length, so as yto give them 'a cross-shaped section of aI widthsubstantially greater than the diameter of the bar, cutting said barinto elements each of which includes at least a portion of a cylindricalpart

